In the newest beta 21014-05-20 I found it impossible to select a custom display color for any object.
It is possible to change the layer color and it also worked perfect on the previous versions. But with the new one installed, when i change the dropdown menu in the object properties from “display color: By Layer” to “Custom” the square which is used to select the color does not appear.
Its the same with different files and also after restarting.
I work on a iMac with MacOSX 10.7.5
By the way
As mentioned in a different topic I would really like it if the default object color was grey. So if white or black are selected, they really appear as this bright color.